git-delete-remote-branches

git-delete-remote-branches

#! /bin/bash

set -e -o pipefail

# Interactive script for deleting remote branches. Focused on branches left over
# when someone else merged or squash-merged a pull request, but did not delete
# the remote branch.
#
# Presents remote branches for a repo, one at a time. So you can decide whether
# to delete them.
#
# For each remote branch, it checks for commit messages on your current branch
# which has the remote branch's name in them and a shows a short commit graph
# to help you decide (maybe that merge commit is near the remote branch's head).

confirm()
{
  local response

  # call with a prompt string or use a default
  read -r -n 1 -p "${1:-Are you sure? [y/N]} " response
  echo

  case "${response}" in
    [yY])
      true;;
    q)
      exit;;
    *)
      false;;
  esac
}

for branch in $(git branch -r | awk '$1 ~ /^origin/ && $1 !~ /HEAD/ { sub(/^ *origin\//, ""); print }'); do
  echo
  echo "-------------- START: branch '${branch}'"
  echo

  echo "Any merge commits?:"
  matches="$(git log --oneline --grep="$branch")"

  if [ -n "$matches" ]; then
    echo "  yep!"
    echo
    echo "$matches"
    echo
    echo "log graph:"
    commit_hash="$(git rev-parse "refs/remotes/origin/${branch}")"
    merge_hash="$(git log --oneline --grep="$branch" | awk 'NR == 1 {print $1}')"
    git log --graph --pretty=format:"%C(yellow)%h%Creset %ad %C(yellow)[%an]%Creset %Cgreen%d%Creset %s" --date=short -n 30 "$commit_hash" "$merge_hash"

     if confirm "Delete remote branch?: '${branch}' [y/N]    "; then
        git push origin -d "${branch}"
      fi
  else
    echo "  nope!"
    echo "  skipping..."
  fi
  echo

  echo
  echo "-------------- END: branch '${branch}'"
  echo

  sleep 1
  tput -x clear
done